#include <iostream>
#include <Eigen/Dense>

using namespace std;
using namespace Eigen;

int main()
{
    Matrix3d m = Matrix3d::Random();
    m = (m + Matrix3d::Constant(3, 3, 1.2)) * 50;
    cout << "m = " << endl
         << m << endl;

    Vector3d v(3);
    v << 1, 2, 3;
    cout << "m * v =" << endl
         << m * v << endl;
}
